(CNN) - The Texas legislature's special session ended in chaos and confusion early Wednesday, with uncertainty lingering over whether lawmakers had voted on a bill that would have greatly restricted abortions in the state.

Well after a midnight deadline, it wasn't clear if the legislation had been voted on and whether it had passed. Senators could be seen talking on the Senate floor.

Texas state Sen. Wendy Davis tried Tuesday to block the abortion bill by attempting a 13-hour filibuster, but appeared to fall short after 10 hours when the chairman ruled she had gone off topic.